If the object weighs more, you just need a more powerful cannon. I believe it's conservation of momentum.
A feather and cannonball would fall at the same speed/time in a vacuum (no atmosphere). So on Earth a cannonball would obviously be better than a feather because of drag and air resistance, but I thought mass cancels out for one of those equations. I don't remember much from physics, but I think both of you guys should be hugging not fighting.
Now let's get back to arguing about how this thread is total bullshit because the Goblin isn't winning.
